If we dig a little deeper then an average horse can manage only fifty per cent of Watt’s 33,000 foot-pound rate. However, the horsepower of one single horse cannot give justice to the equal strength of the horse. The horsepower refers to the foot-pound second system popularly known as (FPS SYSTEM).
A Scottish engineer named James Watt introduced this term in the late 1700 century. As he wanted to compare the modern engines with the old fashioned horses. And what he found out was that a pit pony can only manage 22,000 foot-pounds on an average per minute. The measurements used by him are still in use today to measure the power of cars, boats etc.
If you like to measure horsepower then here is what you need to do. Just multiply the torque of an engine by the speed by using the maths formulae. The formulae are(RPM*T)/ 5252=HP, in which RPM stands for the engine speed and T stands for the Torque, and 5252 stands for radians per second. You can measure the T using a dynamometer.
Afterward, when you like to measure and convert the power, you can just multiply the torque by rpm/5252. A fun fact about horsepower is that a horse can lift to330 pounds of coal in 100 feet/minute and 33 pounds of coal in a thousand feet in one minute.
The horsepower may seem contradictory to many but it is important. Also, there is a difference between the power of USA HPs and European HPs. because the former uses the SI unit to measure and the former uses the metric systems. And that’s why the pounds are replaced with kilograms, to provide a clear figure of seventy-five kilograms in force/second.
If you are someone who enjoys calculation and stuff then measuring the horsepower might be an opportunity for you to do interesting calculations based on the formulas and facts. However, if not then you can use converters online that might get you exact and a proper and correct answer to your question.
However, you must be clear about the certain question of yours about how many hp in a horse?